A worker decorates commemorative mugs made to mark the birth of George Alexander Louis of Cambridge to Prince William and Catherine, The Duchess of Cambridge, ahead of being kiln-fired at the Emma Bridgewater pottery in Hanley, Stoke-on-Trent on July 25, 2013 . Ever since Kate's pregnancy was announced in December, retailers have been busily producing all sorts of baby-related items, from tea towels to royal baby potties. But for many royal collectors, it is all about the hand-finished mugs and plates which they can give pride of place on a mantlepiece or a wall. AFP PHOTO/ANDREW YATES